Error Message:
Msg 322, Level 16, State 1, Line 14
The variable “%.*ls” is specified in the OPTIMIZE FOR clause, but is not used in the query.
Severity level:
16.
Description:
This error message appears when you try to use a variable in the OPTIMIZE FOR hint that is not used in the query.
Consequences:
The T-SQL statement can be parsed, but causes the error at runtime.
Resolution:
Error of the Severity level 16 are generated by the user and can be fixed by the SQL Server user. The statement cannot be run this way. The variable specified in the OPTIMIZE FOR hint must also be used in the query.
Versions:
This error message was introduced with SQL Server 2005.
Example(s):
IF OBJECT_ID(‘dbo.t’) IS NOT NULL
DROP TABLE dbo.t;
GO
CREATE TABLE dbo.t
(
ID int NOT NULL PRIMARY KEY,
ManagerID int
);
DECLARE @id int;
DECLARE @i int;
SET @id = 1;
SELECT
*
FROM
dbo.t
WHERE
ID = @id
OPTION (OPTIMIZE FOR (@i = 1));
Remarks:
In the above example we try to use a the variable @i in the OPTIMIZE FOR hint, but the variable @id in the query. This raises the error.
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